This was first requested in https://github.com/holoviz/hvplot/issues/483#issuecomment-784338535, HoloViews could add support to stacked histograms. Plotly supports that for instance: 
This was first requested in holoviz/hvplot#483 (comment), HoloViews could add support to stacked histograms.
Plotly supports that for instance:
